The Wolf-Rayet nebula NGC 3199 - an interstellar snow plough?

Details The Wolf-Rayet nebula NGC 3199 - an interstellar snow plough? The Wolf-Rayet nebula NGC 3199 - an interstellar snow plough?

Dec 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...226..270d&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 226, no. 1, Dec. 1989, p. 270-277.

Astronomy and Astrophysics

Astrophysics

10

Nebulae, Stellar Winds, Wolf-Rayet Stars, Interstellar Gas, Line Spectra, Stellar Envelopes, Stellar Mass, Stellar Structure

Scientific paper

The Wolf-Rayet nebula NGC 3199 has a highly asymmetric morphology, with a very bright hemisphere near the exciting star HD 89358 and a much fainter and more extended other hemisphere. This nebula is modeled in terms of the distorted bubble produced by a moving star blowing a strong stellar wind into a surrounding uniform interstellar medium; this model is fitted to the morphology and observed kinematic data. The exciting star appears to be moving at about 60 km/s into local interstellar gas of density of about 10/cu cm, and has a mass-loss rate of about 0.000027 solar mass/yr. This latter mass-loss rate is in excellent agreement with observed mass-loss rates from Wolf-Rayet stars.

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